核分裂物質 かくぶんれつぶっしつ Meanings Noun fissionable materials Kanji 核 nucleus. Read as カク. 分 part. Read as ブン. 裂 rip. Read as レツ. 物 thing. Read as ブツ. 質 quality. Read as シツ. Word lists Physics Jinuma: Japanese Dictionary · Word lists